1986-02-16 Ki-Young Chung w rtd 6 (15) Tyrone Jackson, General Gym, Ulsan, South Korea - IBF. Referee: Bruce McTavish. With both men boxing with plenty in hand for the first five rounds there was little excitement, but that all changed in the sixth when both the champion and Jackson (126) upped the pace. After being hurt by heavy left hook, Chung (125¾) immediately went on the offensive to drop Jackson with a series of solid one-twos and although the latter got up, cut and bewildered, he was retired by his corner at the end of the sixth.